TPG Tuning Single Turbo BMW M4 Project

[Rik84]

Originally Posted by TPG Tuning

We have used the EFR series before with underwhelming results. A large group of them end up with the turbine wheel missing and the rest tend to make horrible power. I agree some tend to spool nice, however a larger percentage we've used have performed poorly. On top of having weak power potential , the compressor covers and turbine housings are massive making fitment difficult.

We have been in business with Forced Performance for years . Their products have been extremely beneficial and reliable. Xona Rotor is a spin off with FP and Tial. It just made sense to us to continue using products we know and trust , as well as s great relationship we've built over many years

Interesting - FP has had a sub par standard and all but eliminated them selves from other platforms. The Xona product does seem intriguing though.

Very interested in the results. Nice to see someone trying to push this platform a bit.

[TPG Tuning]

FP has had a great reputation as far as I know. Sure we get the occasional phone call from a prospective customer that he read somewhere there was a problem , but that is with any company. The success we have had with them is what led us to choose their juncture with tial.

As for eliminating themselves they support , Subaru , Mitsubishi ( Most years ) , Nissan, BMW, as well as some others I may be forgetting, and they is just the stock location style turbos, not including their T3/T4 footprints.

Not saying they are the be all end all, but we have had great success over the years and it was an easy call to venture on this project with their product.

[AM4ZING]

Originally Posted by TPG Tuning

FP has had a great reputation as far as I know. Sure we get the occasional phone call from a prospective customer that he read somewhere there was a problem , but that is with any company. The success we have had with them is what led us to choose their juncture with tial.

As for eliminating themselves they support , Subaru , Mitsubishi ( Most years ) , Nissan, BMW, as well as some others I may be forgetting, and they is just the stock location style turbos, not including their T3/T4 footprints.

Not saying they are the be all end all, but we have had great success over the years and it was an easy call to venture on this project with their product.

Any news on the single turbo setup?

[TPG Tuning]

We will update the first post with progress as it continues. The next step is to finish the manifold. Following that we will begin the intercooler build. As things move on I will update the thread accordingly.

[Gabe@TAG]

Holy hell.

I can't wait to see this in action.

[Commanderwiggin]

Would be sweet if a Precision Gen2 7675 or 6870 would fit on this...

[TPG Tuning]

We will be doing a bunch of turbo testing to find the one best fit for our goals.

[Commanderwiggin]

Originally Posted by TPG Tuning

We will be doing a bunch of turbo testing to find the one best fit for our goals.

What are your goals?

[TPG Tuning]

We've always been more geared towards drag racing. We did 10.7 with upgraded twins on a JB4. I would like to see consistent 9 second passes with our flash and proper fueling. We have not done half mile racing yet but I would like to see 175+ in the half mile .

[AYF80]

Oh man, this is what I've been holding out for.

Im guessing your goals are 850/900 RWHP?

[Commanderwiggin]

Originally Posted by TPG Tuning

We've always been more geared towards drag racing. We did 10.7 with upgraded twins on a JB4. I would like to see consistent 9 second passes with our flash and proper fueling. We have not done half mile racing yet but I would like to see 175+ in the half mile .

I hope you guys strap a new Gen2 7675 in there for the half and a 6870 for drag Can't wait to see what this does...

[LimeRockM235]

boner jams 2016

[Jrosh1223]

Awesome! Can't wait to see how this turns out.

[BMW M4 PWR]

Originally Posted by TPG Tuning

We already have port injection and a large pump testing on our M3. We will be utilizing that system with a redesigned low pressure pump , including 6x ID1300cc injectors to fuel this setup. I think we might use VP Import as well.

With PI and that much auxiliary fuel why would you choose to run leaded race fuel as oppose to E85? Even with 117oct. race fuel and needing to run ~30% less of it to make the same power as E85, your cylinder temperatures and EGT's will be MUCH higher on it giving you less margin of safety when really pushing it than you're blessed with on E85..

[TPG Tuning]

Originally Posted by BMW M4 PWR

With PI and that much auxiliary fuel why would you choose to run leaded race fuel as oppose to E85? Even with 117oct. race fuel and needing to run ~30% less of it to make the same power as E85, your cylinder temperatures and EGT's will be MUCH higher on it giving you less margin of safety when really pushing it than you're blessed with on E85..

The low pressure pump will be the issue. Supplying ample fueling for the power we intend making will become a challenge we will need to overcome. People have a false hope of E85 and rarely understand it. Although it burns cooler and gives great knock suppression , it is not a be all end all.

Per Cobb Tuning , on direct injected motors , higher ethanol contents tend to do nothing other than strain the fuel system. 50-60% ethanol has shown in their testing to produce similar power numbers than to true e85. Therefore you are simply running your fuel system harder for no reason. Also to add to that, people who use E85 tend to tune their car blindly in a way. What I mean by that , ethanol has great knock suppression , therefore it can hide real detonation from the knock sensor itself and you can be well beyond MBT if you are not paying attention.

Race fuel such as VP import not only gives us an added boost from the oxygenated fuel, it is also some of the best fuel available in high powered applications. On top of that it can be run much leaner which falls directly in line with a direct injected motor and gives us a larger window for the low pressure pump.

[soobieajax325]

This car is gonna be ridiculous...

[SakhirM4]

Calling this car an M4 is like calling the Batmobile a Lincoln Futura

[PeterPure]

Why not run 40/50% MS109 and 60/50% E100? Seems like the best of both worlds? Maximum benefit of the E and nicely complemented with unleaded race fuel? I will be running this mix at events once I have PI on the car.

[sittingmongoose]

Originally Posted by TPG Tuning

We've always been more geared towards drag racing. We did 10.7 with upgraded twins on a JB4. I would like to see consistent 9 second passes with our flash and proper fueling. We have not done half mile racing yet but I would like to see 175+ in the half mile .

So two questions
1. How are you able to go faster than the limiter? I thought no one was able to remove the governor yet?
2. Pardon my ignorance but what is the advantage of a single turbo vs a twin? Can't you just make the two twin turbos bigger? I heard the supra community does this too.

[FC4]

Will these modifications void my warranty?

[TPG Tuning]

Originally Posted by sittingmongoose

So two questions
1. How are you able to go faster than the limiter? I thought no one was able to remove the governor yet?
2. Pardon my ignorance but what is the advantage of a single turbo vs a twin? Can't you just make the two twin turbos bigger? I heard the supra community does this too.

The limiter can be and has been removed with proper flash tuning. That has been available for some time now.

A large single should provide more top end power for us, completely shifting the powerband to the right side of the graph , which is where we need it on a 1/4-1/2 mile race. I expect better top end and better mph utilizing the single turbo.

[TPG Tuning]

First post updated with a few pictures of the start of the intercooler.